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Reduced engine power when engine is cold - 2002 Chevrolet TrailBlazer

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Check for an engine code " exaust valve control sol " on 4.9 I6 w/VVT

Posted on Oct 14, 2010

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Reduce power light on has no throttle and keeps giving throttle accuator cdes


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Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.

Oct 28, 2015 | Cars & Trucks

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Jeep accelerates


name it, give details.
hot engine,
cold engine
both hot and cold?
hesitates then catches up Y/N?
does engine have full power at wide open throttle up hills.? y/n

these input facts, point to causes, reducing labor and tests. 10 fold.

Mar 07, 2014 | 2002 Jeep Liberty

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Reduced power light is on and drives slow


Try adding gas line antifreeze to your fuel. If you have water in the gas, this will clear it up. Water in the gas line can turn to slush or even ice when the temperature dips below freezing, causing reduced power because of reduced fuel flow.

Dec 09, 2011 | 2001 Isuzu Rodeo

2 Answers

What causes dash say reduce engine power


You need to have fault scan to identify what sensor triggered light. Reduced Engine power is telling you that it's in LIMP mode.

Mar 12, 2011 | 2003 GMC Sierra 1500

1 Answer

Hi: My engine light has been coming on and it says reduced engine power, which actually happens, the engine power reduceds making driving a little scary. It seems to happen mostly when it is cold out. My...


You need a new personal mechanic. When many codes come up, that means he detected many problems and his head started to spin like Beetle Juice. Find someone that knows how to interpret the meaning of those codes and do the correct repairs.

Oct 04, 2010 | 2006 Pontiac G6

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2006 Chevy Impala reduced engine power


best bet is to stop in at a Pep Boys, Autozone, or similar big autoparts seller, and ask for free trouble code scan, which should pinpoint area causing problem. If not obvious by codes, what is necessary to repair the problem code, get back to us with those codes and we will be glad to assist you further. Better this way, takes away the guess work, and saves you money, as well as getting it right the first time.

Dec 12, 2009 | 2006 Chevrolet Impala

1 Answer

Check engine light and reduced power light are on at the same time. power is greatly reduced. what could be the problem? 2001 isuzu trooper. need help, please.


Pluged E G R valve and confused E C M as a result is likely...Pull vacuum hose off at E G R valve (engine cold please) If metal tube pluged up clean out with 1/8" drill bit.Vacuum test with hand pump (should hold pressure when pumped up and relieve as you you relieve tool valve) if available if not try it out on the road after reaming.

Oct 31, 2009 | 2001 Isuzu Trooper

2 Answers

Reduced power light came on


reduced power messge is not caused by oil pressure. i assume this a 3.0L v6. this engine has a electronic throttle body which is a electric motor that operates the throttle plate that takes the place of a throttle cable. in cold weather the pcv (positive crankcase venelation) system accumulates moisture that will form on the throttle plate, in cold weather the water freezes and causes throttle plate to stick. when the ecm detects any malfunction whithin the throttle control circuit it is put in to reduced power mode that limits throttle position. usually resets after ign. is cycled. there is a service bullitin to re-position pcv hose behind throttle plate to reduce moisture bulid-up on throttle plate. your saturn dealer can perform this service.

Mar 21, 2009 | 2003 Saturn VUE

1 Answer

Reduced Power, Emissions Light is on


when weather warms up a bit run engine at 3500rpm and leave it for about 10mins this should clear the cat out,if the cat runs cold it will clog up reducing the power of the engine

Jan 15, 2009 | 2005 Chevrolet Colorado

2 Answers

04 chevy tahoe


the check engine light you are getting sounds like and electrical problem, have the battery and the alternator tested, and have autozone or the like pull the codes off for you and see if you can figure out what they are....

Jul 06, 2008 | 2004 Chevrolet Tahoe

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